SUNSET: 
Osiris-REX "TAGs" Bennu, Returns Stunning Views
See images and video from NASA’s Osiris-REX spacecraft as it samples the Nightingale site.
Moon’s Magnetism Might Have Protected Earth
The Moon's magnetic field, now long gone, might once have shielded Earth from the young Sun's radiation.
Comets Crawl through the Skies at Dawn and Dusk
Comets have been scarce since NEOWISE departed the scene. Not anymore. Suddenly, there are four fresh faces visible from dusk til dawn.
Osiris-REX Successfully Collected Sample from Asteroid Bennu
NASA's Osiris-REX mission has successfully touched down on the asteroid Bennu to collect a sample of its surface for return to Earth.
Osiris-REX Finds Some of Solar System's Oldest Rocks on Bennu
NASA's Osiris-REX mission has found evidence of ancient water flows on the surface of asteroid Bennu.
Did Pioneer Venus Find Phosphine First?
NASA's Pioneer Venus mission, which launched in 1978, found the first tantalizing clues of phosphine, a potential biosignature gas — but it took 40 years to realize it!
Calling on Amateur Astronomers: Observe Venus!
The Mercury-bound BepiColombo spacecraft will fly by Venus on October 15th, and the mission is asking amateurs for their help.
Evidence Grows for Super-Salty Underground Lakes on Mars
New analysis of data from the European Space Agency's Mars Express orbiter strengthens the case for salty lakes underneath Mars's south polar cap.
Comets Have (Ultraviolet) Aurora, Too
Observations from the European Space Agency’s Rosetta spacecraft show that Comet 67P/Churyumov-Gerasimenko has its own aurora.
Race to Venus: How We’ll Verify Phosphine
Confirming phosphine's presence on Venus is difficult from Earth . . . and that makes a good case for a mission to our sister planet.
The Sun’s Activity Cycle Is Stabilizing
Solar Cycle 25 is here, and forecasts suggest the next decade of the Sun’s activity will mimic the last one — halting a 40-year trend.
Uranian Moons Are Like Dwarf Planets
The moons of Uranus exhibit heat signatures similar to dwarf planets in the Kuiper Belt — where the moons were likely born.
Potential Biosignature Found in Venus’s Clouds
Astronomers might have found a potential indication of life in the clouds of Venus.
Amateur Astronomer Finds Kilometer-size Asteroid
A grant from the Planetary Society enabled an amateur astronomer's discovery of kilometer-size asteroid 2020 QU6.
Stormy Times on Jupiter, Comet Howell Steps Up, and More
Colder weather might be coming, but don't pack away that telescope! You'll miss a powerful storm that's remaking Jupiter's North Temperate Belt, a returning comet, Mira on the rise, and a bright supernova in the Great Bear.
Study Suggests Jupiter Could Have 600 Moons
New detections of candidate moons suggest that the king of planets could have hundreds of smaller satellites.
Twinkling Quasar Hints at Mysterious Nearby Plasma Cloud
Radio observations have turned up evidence of a cloud of hot plasma near — or even in — the solar system. But its distance estimate is still up for debate.
The Origin of Earth’s Water
Scientists have discovered a new candidate source for Earth's water: building blocks of the primordial solar system known as enstatite chondrites.
How Did Pluto's Moons Form?
A massive collision with Pluto’s moon Charon could have formed the dwarf planet’s collection of smaller moons.
Hubble Captures Comet NEOWISE
The Hubble Space Telescope imaged the famous comet on August 8th.
